Is Your Building Too “Healthy”: How Ventilation May Be Making Us Sick – Ep 118 with Joseph Lstiburek

2026-01-07

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This week on Better Buildings for Humans, host Joe Menchefski welcomes building science legend Dr. Joseph Lstiburek for an unfiltered and unforgettable conversation. From mold to CO₂ myths, Joseph challenges conventional thinking about ventilation, insulation, humidity control, and what really makes a building “healthy.” With decades of hands-on experience, a sharp wit, and a no-nonsense take on industry dogma, he dives deep into where the U.S. is falling short—and how Canada got it right. You'll hear why "drying potenti...

This week on Better Buildings for Humans, host Joe Menchefski welcomes building science legend Dr. Joseph Lstiburek for an unfiltered and unforgettable conversation. From mold to CO₂ myths, Joseph challenges conventional thinking about ventilation, insulation, humidity control, and what really makes a building “healthy.” With decades of hands-on experience, a sharp wit, and a no-nonsense take on industry dogma, he dives deep into where the U.S. is falling short—and how Canada got it right. You'll hear why "drying potential" matters more than you think, the trouble with high-performance HVAC, and why most over-ventilated buildings are actually failing their occupants. This episode is a must-listen for anyone serious about high-performance buildings, durable design, and real-world building science.

More About Joseph Lstiburek

Joseph LSTIBUREK, B.A.Sc., M.Eng., Ph.D., P.Eng., is the founding principal of Building Science Corporation and an ASHRAE Fellow. He is a building scientist who investigates building failures. Dr. Lstiburek received an undergraduate degree in Mechanical Engineering from the University of Toronto, a master’s degree in Civil Engineering from the University of Toronto and a doctorate in Building Science Engineering from the University of Toronto. He has been a licensed Professional Engineer since 1982.

The Wall Street Journal referred to him as “the dean of North American building science.” Fast Company magazine called him “the Sherlock Holmes of construction”. He is internationally recognized and his work has influenced building codes and standards in every climate zone.

He is a recipient of the Carl Cash Award from ASTM, a “Becky” from the Ontario Building Envelope Committee (OBEC) and the EEBA Legacy Award all for lifetime contributions to building science. He has also been inducted into the Building Performance Industry Hall of Fame and has received the NESEA Professional Leadership Award for "changing the way we think about building science and how we perform our work”.

Dr. Lstiburek is an acclaimed educator who has taught thousands of professionals over the past four decades and has written countless papers. He has a joy for telling tall tales to his proteges and audiences.

Contact:

https://www.linkedin.com/in/joseph-lstiburek-03290029/

https://buildingscience.com/

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